add link to map

mkdocs.yml

@@ -47,6 +47,7 @@ nav:
   - facilities.md
   - how-to-survive.md
   - faq.md
+  - 'Map': 'https://map.events.ccc.de/camp/2023/map/'
   - 'Livestreams and recordings': 'https://media.ccc.de'
   - 'Principles of our event and community': 'https://help.ccc.de/principles.en.html'
   - 'Help!': 'https://help.ccc.de/index.en.html'